TMB is an abbreviation that teens use most of the time and TMB meaning is Text Me Back, as they want someone to respond and it has to be fast. They do not have to type the entire phrase so they abbreviate it to TMB. This is the language that is generally used in informal chats between friends to maintain the level of communication as quickly and effectively as possible. The parents are supposed to realize that TMB is not a bad slang but a mere form of urgency by the teens. The very awareness of this term may make parents see much better the texting style of their child. Know more about: what does tmb mean